• Journal of Positioning, Navigation, and Timing
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• v.8 no.4
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• pp.139-152
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• 2019

The design of new navigation signals is a key factor in building new satellite navigation systems and/or modernizing existing legacy systems. Navigation signal design involves selecting candidate groups and evaluating and analyzing their signal performances. This process can be easily performed through software simulation especially at the beginning of the development phase. The analytical signal performance analysis software introduced in this study is implemented based on equations between the signal design parameters of Radio Navigation Satellite Service (RNSS) and the navigation signal figures-of-merit (FoMs). Therefore, this study briefly summarizes the RNSS signal design parameters and FoMs before introducing the developed software. After that, we explain the operating sequence of the implemented software including the Graphical User Interface (GUI), and calculate the FoMs of an example scenario to verify the feasibility of the software operations.

• Annual Conference of KIPS
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• 2003.11b
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• pp.785-788
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• 2003

최근 휴대폰 및 PDA 에서 사용되는 위치기반 서비스의 활용도가 높아지고 있다. 사용자들은 보다 효과적인 위치기반 서비스의 디스플레이에 더욱 많은 기대를 하고 있다. 따라서, 본 논문에서는 platform 에 독립적이며, 다양한 머신에서 실행될 수 있도록 Java 를 통한 웹서비스 기술을 바탕으로 한 기본 아키텍쳐 및 프로그램을 선 보일 것이다. 또한 OpenLS 에서 제시하는 스펙을 기본으로 SOAP 방식으로 구현하고, LBS 기본 핵심 서비스 중 프리젠테이션 서비스의 콤퍼넌트 모듈을 분산 컴퓨팅 하에서 수행할 수 있는 Webservice 형태로 구현한 것이다.

• Proceedings of the KSR Conference
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• 2008.06a
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• pp.384-389
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• 2008

In this paper, we propose a UML modeling of ATO on-board software. An automatic train operation (ATO) system is a real-time control system, which operates a train without a manual operation by a driver. For the safe and comfortable service, real-time embedded software for ATO on-board equipment should have both of high performance and reliability. UML-based object-oriented modeling technique is introduced and used widely to design software that satisfies this requirement. We used Rhapsody, which is a modeling tool for real-time embedded software, to model the construction and the behavior of ATO on-board equipment. As a result, ATO on-board software which performs the profile calculation and the real-time speed control is designed and implemented. The brief modeling result including behavioral characteristics and the simulation results are presented.

• Annual Conference of KIPS
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• 2023.05a
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• pp.775-776
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• 2023

'강의가 듣고 싶어서'는 학생들에게 강의실의 위치를 알려주는 목적으로 기획되었다. 캠퍼스 맵에 강의실 마커를 띄워 위치를 알려주고, 건물 내부에서 강의실을 찾아가는 길을 알려준다. 추천 시스템을 통해 공강시간에 사용 가능한 스터디룸의 정보를 제공한다.

• Proceedings of the Korean Society of Computer Information Conference
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• 2024.01a
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• pp.283-284
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• 2024

한국의 스마트폰 보유율은 약 95%로 세계 최고이며, 사용 시간이 가장 긴 애플리케이션의 대부분이 SNS이다. 코로나19로 여행객이 늘면서 사람들은 SNS를 통해 국내외 여행 사진을 게시 및 자랑한다. 그러나 기존 SNS에서는 지역별 사진을 찾기 어렵고 정확한 위치 표시가 부족하다. 이에 따라 원하는 사진과 위치를 확인하고 내비게이션 기능을 이용하여 목적지까지 갈 수 있는 앱을 개발하게 되었다. 국내 지도상의 주요 포토 스팟과 해당 지역의 사진을 확인할 수 있는 애플리케이션을 개발하여 사용자가 직접 참여하고 공유할 수 있도록 한다.

• 제어로봇시스템학회:학술대회논문집
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• 2002.10a
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• pp.91.4-91
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• 2002

Today, Internal offers WWW(World Wide Web), remote control, file transfer and e-mail service. Among the services, WWW takes large portion because of convenient GUI, easy information search and unlimited information registration. WWW service gives the comfort in life such as goods purchase, information search, real-time news, internet TV and medical diagnosis. Remote Monitoring Server(RMS) Ssystem that uses internet and WWW is constructed for chip mounter. Hardware base consists of RMS, chip mounter and C/S(Customer Service) service. Software includes DBMS and various modules in server home page. Web browser provide product num her, bad product number, troubl...

• Journal of Industrial Convergence
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• v.6 no.1
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• pp.57-72
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• 2008

In this study, general outline of P2P(peer to peer) application was analyzed dealing with security attacks and threats on the P2P environment. Information security service was studied to provide secure P2P service under the information threats. This study proposes two methods to provide secure information security service. One is a method to use personal firewall software on the peer. The other is a method to use key distribution protocol for confidentiality and integrity.

• International Journal of Advanced Culture Technology
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• v.6 no.4
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• pp.303-308
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• 2018

Demand is increasing rapidly in recent years than supply to machine learning professionals. To alleviate this gap, user-friendly machine learning software that can be used by non-specialists has emerged, which is Machine Learning-as-a-Service(MLaaS). MLaaS provides services that enable businesses to easily leverage ML capabilities without expertise. In this paper, we will compare and analyze features, interfaces, supporting programming language, ML framework, and Machine Learning services of MLaaS, to help companies easily use ML service.

• Journal of KIISE:Software and Applications
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• v.33 no.5
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• pp.460-469
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• 2006

To integrate heterogeneous distributed systems, there exist various researches and developments for the purpose of its adoption into enterprise environment. However, when web service technologies are applied, it is difficult to adopt directly existing software system development methodologies, because of the peculiar architecture of web services, such as service provider, service requester, and service repository. M4WSD(Method for Wes Services Development) is a web service development process model and involves procedures and guidelines to develop web services based on a Use Case model that is elicited from a business domain in requirement analysis. In this paper, we focus on how to determine key realization decisions for each service. The assessment guidelines help you to structure the problem of determining implementation strategy.

• Proceedings of the Korean Institute of Information and Commucation Sciences Conference
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• 2013.10a
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• pp.678-680
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• 2013

Recently, A computing environment are provided that can easily be used for services based on the cloud environment. Among them, SaaS(SoftWare as a Service) is that it provides cloud users to be available by placing the cloud systems on the Internet software. But, the problem with this, problems is that user can not be utilized to not find a service registered in the cloud system. The thing to make clear the meaning and relationship between services using the ontology to solve these problems, It must be supported to be used to find the exact service the user wants. Ontology for service discovery can be used to help to find services by guessing relevance by using the function or service names entered by the user. We provide how to configure the service ontology and the search system of services using ontology.